Esempio n. 1
0
  private static OrdinalSet<InstanceKey> findReachableInstances(
      final PointerAnalysis<InstanceKey> pts, final PointerKey pkStart) {
    final HeapGraph hg = pts.getHeapGraph();
    if (!hg.containsNode(pkStart)) {
      return OrdinalSet.empty();
    }

    final OrdinalSetMapping<InstanceKey> mapping = pts.getInstanceKeyMapping();

    final BitVectorIntSet resultSet = new BitVectorIntSet();

    final NumberedDFSDiscoverTimeIterator<Object> dfsDiscover =
        new NumberedDFSDiscoverTimeIterator<Object>(hg, pkStart);
    while (dfsDiscover.hasNext()) {
      Object obj = dfsDiscover.next();
      if (obj instanceof InstanceKey) {
        InstanceKey ik = (InstanceKey) obj;
        final int ikNum = mapping.getMappedIndex(ik);
        resultSet.add(ikNum);
      }
    }

    final OrdinalSet<InstanceKey> reachable = new OrdinalSet<InstanceKey>(resultSet, mapping);

    return reachable;
  }
Esempio n. 2
0
  private static Result getOrigSDG(Config cfg, IProgressMonitor progress)
      throws IllegalArgumentException, CancelException, PDGFormatException, IOException,
          WalaException, InvalidClassFileException {
    progress.beginTask(Messages.getString("Analyzer.Task_Prepare_IR"), -1); // $NON-NLS-1$

    com.ibm.wala.ipa.callgraph.impl.Util.setNativeSpec(cfg.nativesXML);

    progress.subTask(Messages.getString("Analyzer.SubTask_Analysis_Scope")); // $NON-NLS-1$

    ClassLoader loader = cfg.getClass().getClassLoader();
    AnalysisScope scope = Util.makeAnalysisScope(cfg, loader);
    // AnalysisScopeReader.makeJavaBinaryAnalysisScope(cfg.scopeFile, cfg.classpath, null);
    progress.done();

    ClassHierarchy cha = ClassHierarchy.make(scope, progress);

    Iterable<Entrypoint> entrypoints =
        com.ibm.wala.ipa.callgraph.impl.Util.makeMainEntrypoints(scope, cha, cfg.mainClass);
    AnalysisOptions options = new AnalysisOptions(scope, entrypoints);
    AnalysisCache cache = new AnalysisCache();

    progress.subTask(
        Messages.getString("Analyzer.SubTask_Call_Graph_Builder") + cfg.pointsTo); // $NON-NLS-1$
    SSAPropagationCallGraphBuilder builder =
        SDGFactory.getCallGraphBuilder(cfg.pointsTo, options, cache, cha, scope);

    /**
     * Change the wala internal pointer and instancekeyfactory of the callgraph builder to our
     * adapter. So we can keep track of the created InstanceKeys and PointerKeys. This information
     * is used later on when creating subobject trees for accessed field variables.
     */
    InstanceAndPointerKeyFactoryAdapter adapter = null;
    InstanceKeyFactory ikFact = builder.getInstanceKeys();
    PointerKeyFactory pkFact = builder.getPointerKeyFactory();
    adapter = new InstanceAndPointerKeyFactoryAdapter(ikFact, pkFact);

    builder.setInstanceKeys(adapter);
    builder.setPointerKeyFactory(adapter);

    progress.done();

    progress.subTask(Messages.getString("Analyzer.SubTask_Call_Graph")); // $NON-NLS-1$
    CallGraph cg = builder.makeCallGraph(options, progress);

    if (cfg.optimizeCg >= 0) {
      CallGraphPruning opt = new CallGraphPruning(cg);
      System.out.println("Call Graph has " + cg.getNumberOfNodes() + " Nodes.");
      Set<CGNode> sopt = opt.findApplicationNodes(cfg.optimizeCg);
      cg = new PrunedCallGraph(cg, sopt);
      System.out.println("Optimized Call Graph has " + cg.getNumberOfNodes() + " Nodes.");
    }

    if (Debug.Var.DUMP_CALLGRAPH.isSet()) {
      Util.dumpCallGraph(cg, cfg.mainClass.replace('/', '.').substring(1), progress);
    }

    if (Debug.Var.DUMP_HEAP_GRAPH.isSet()) {
      PointerAnalysis pta = builder.getPointerAnalysis();
      HeapGraph hg = pta.getHeapGraph();
      Util.dumpHeapGraph(
          cfg.mainClass.replace('/', '.').substring(1) + "." + cfg.pointsTo, hg, null);
    }

    PointerAnalysis pta = builder.getPointerAnalysis();
    progress.done();

    DemandRefinementPointsTo demandPts = null;
    if (cfg.useDemandPts) {
      throw new UnsupportedOperationException();
      //		    MemoryAccessMap mam = new PABasedMemoryAccessMap(cg, builder.getPointerAnalysis());
      //			demandPts = new DemandRefinementPointsTo(cg,
      //				new ThisFilteringHeapModel(builder,cha), mam, cha, options, getStateMachineFactory());
    }

    IPointerAnalysis pts = new PointsToWrapper(demandPts, pta);

    progress.subTask(Messages.getString("Analyzer.SubTask_Search_Main")); // $NON-NLS-1$
    IMethod main =
        edu.kit.joana.deprecated.jsdg.util.Util.searchMethod(
            entrypoints, "main([Ljava/lang/String;)V"); // $NON-NLS-1$
    progress.done();

    progress.done();

    SDG sdg = SDG.create(main, cg, cache, adapter, pts, cfg, progress);
    sdg.setAnalysisScope(scope);
    sdg.setPointerAnalysis(pta);

    progress.done();

    if (Debug.Var.PRINT_FIELD_PTS_INFO.isSet()) {
      Log.info("search for field allocs called " + PDG.searchFieldAllocs + " times.");
    }

    if (Debug.Var.PRINT_UNRESOLVED_CLASSES.isSet()) {
      for (TypeReference tRef : cg.getClassHierarchy().getUnresolvedClasses()) {
        Log.warn("Could not resolve: " + Util.typeName(tRef.getName()));
      }
    }

    return new Result(null, sdg, cg, pta, null);
  }